Toshiba TOSVERT VF-MB1 Instruction Manual page 177

2) To suspend acceleration or deceleration by means of a signal from an external control device
Set 60 for the any terminal signal input terminal. As long as ON signals are inputted, the motor continues to
rotate at a constant speed.
Output frequency [Hz]
Terminal board input
Ex.) When using the S3 terminal as the acceleration/deceleration suspend terminal
Title
Input terminal selection 6 (S3)
f116
If the stall control function is activated during constant-speed rotation
The frequency drops momentarily as a result of stall control, but the time for which the frequency drops is included
in the suspend time.
Output frequency [Hz]


f351 (Momentary acceleration (deceleration) suspend time) = (t1 + t2 + ts)
 Stall control
Refers to the inverter's function of automatically changing the operation frequency when it detects an
overcurrent, overload or overvoltage. Using the following parameters, you can specify the way, the stall
control is performed for each kind of stall.
Overcurrent stall :  (Stall prevention level 1)
Overload stall :  (Electronic thermal protection characteristic selection)
Overvoltage stall :  (Overvoltage limit operation)
Note: Setting the frequency command at the same frequency as the acceleration suspend frequency ( f350 )
disables the acceleration suspend function.
Similarly, setting the frequency command at the same frequency as the deceleration suspend frequency
( f352 ) disables the deceleration suspend function.
Function
t1 ts t2
Stall
F-57
Time [s]
Adjustment range Example of setting
60 (Acceleration/
0-203
suspend signal)
Time [s]

E6581697
deceleration
6